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改进的GA-PTS降低OFDM峰均比 被引量：7

Improved GA-PTS Method for Reducing PAPR of OFDM
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摘要 提出了一种使用相位因子优选对方法改进GA-PTS以降低OFDM的PAPR的算法。改进算法根据具有低PAPR值的不同PTS子块求和有更大的概率获得具有低PAPR值的传输信号,将GA-PTS中基因交叉步骤变为选择相位因子优选对,达到进一步提高GA-PTS降低系统PAPR的目的。仿真结果验证了该算法可以获得低于传统GA-PTS算法0.2 dB左右的PAPR性能。 A novel method called phase factor optimal pair （PFOP） is proposed to improve m genetic algorithm with partial transmitter sequence （GA-PTS）. The key of PTS algorithm is to choice the phase factors. GA-PTS uses phase factors as genes to take selection, crossover and mutation. The improved method is based on the principle that the sum of several low PAPR PTS sequences has a bigger probability to obtain the OFDM signals with low PAPR. In the improved GA-PTS, the cross step is changed into the step of selecting phase factor optimal pair. The simulation results show that this improved method has 0.2dB of the PAPR lower than ordinary GA-PTS algorithm.
作者 杨霖 张帅 王小波 贾莹莹 田浩 李少谦
机构地区 电子科技大学通信抗干扰技术国家级重点实验室
出处 《电子科技大学学报》 EI CAS CSCD 北大核心 2013年第3期338-343,共6页 Journal of University of Electronic Science and Technology of China
基金 国家自然科学基金(61001088) 高等学校博士学科点专项科研基金(2010018520007) 中央高校基本科研基金(ZYGX2012J141)
关键词 遗传算法 正交频分复用 部分传输序列 峰值平均功率比 相位因子优选对 genetic algorithm （GA） orthogonal frequency division multiplexin （OFDM） partial transmitter sequence （PTS） peak-to-average power ratio （PAPR） phase factor optimal pair
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献13

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二级参考文献4

共引文献4

同被引文献37

  • 1张选平,杜玉平,秦国强,覃征.一种动态改变惯性权的自适应粒子群算法[J].西安交通大学学报,2005,39(10):1039-1042. 被引量：138
  • 2ZHU Xiao-dong, PAN Wen-sheng, LI Hong, et al. Simplified approach to optimized iterative clipping and filtering for PAPR reduction of OFDM signals[J]. IEEE Transactions on Communications, 2013, 61(5): 1891-1901.
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  • 5LI Li, QU Dai-ming, JIANG Tao. Partition optimization in LDPC-Coded OFDM systems with PTS PAPR reduction[J]. IEEE Transactions on Vehicular Technology, 2014, 61(8): 4108-4113.
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  • 10YANG L, CHEN R S, SIU Y M. An efficient sphere decoding approach for PTS assisted PAPR reduction of OFDM signals[J]. AEU-International Journal of Electronics and Communications, 2007, 61(10): 684-688.

引证文献7

二级引证文献8

电子科技大学学报
2013年 第3期

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